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This article presents 16–52-GHz multiband transmit and receive phased arrays designed to support multistandard 5G communications. The 64-element arrays are built using16\,× \, 1linear arrays, and each has four4\,× \, 1beamformer chips on a six-layer printed circuit board (PCB) with a Wilkinson combiner/divider network and tapered slot antennas. The wideband beamformer chips are designed in a SiGe BiCMOS process and use the RF beamforming architecture. The arrays have ±60° scanning capability in the azimuth plane and ±30° in the elevation plane with low sidelobes. The 64-element Tx array achieves an effective isotropic radiated power (EIRP) of 50–51.7 and 47.6–49 dBm atPₛₐₜandP_1\, dB, respectively, at 24.5–48 GHz. The 5G-NR-compliant waveforms with 400 MHz and up to 256-quadrature amplitude modulation (QAM) are transmitted with$G/T$of −19.3 to −14.4 dB (withT ₐₙₜ = 295K) at 20–50 GHz, and < 2.6% error vector magnitude (EVM) performance when tested with 400-MHz 256-QAM 5G-NR-complaint packets. To the author’s knowledge, this work achieves the highest bandwidth Tx and Rx phased array systems suitable for multiband 5G operation.
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Alhamed et al. (2022) studied this question.
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